| (19) |
 |
|
(11) |
EP 0 271 929 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
21.09.1988 Bulletin 1988/38 |
| (43) |
Date of publication A2: |
|
22.06.1988 Bulletin 1988/25 |
| (22) |
Date of filing: 18.12.1987 |
|
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| (84) |
Designated Contracting States: |
|
BE DE FR GB IT NL |
| (30) |
Priority: |
19.12.1986 JP 30322886
22.12.1986 JP 30587486
|
| (71) |
Applicant: KAWASAKI STEEL CORPORATION |
|
() |
|
| (72) |
Inventors: |
|
- Wakui, Tadahiro Technical Research Division
()
- Yoshino, Kenji Technical Research Division
()
- Komatsu, Masafumi Technical Research Division
()
- Kumazawa, Yumiko Technical Research Division
()
- Yamagishi, Touru Technical Research Division
()
- Izumi, Mitsuhiko Technical Research Division
()
|
|
| |
|
| (54) |
Aromatic polyesters, polyesteramides, and compositions thereof |
(57) An aromatic polyester consisting of 40-70 mol% of unit I derived from p-hydroxybenzoic
acid, 1-8 mol% of unit II derived from m-hydroxybenzoic acid or isophthalic acid,
6-36 mol% of units III and IV derived from terephthalic acid and 2,6-naphthalene dicarboxylic
acid, respectively, and 10-40 mol% of unit V derived from a symmetrical dihydroxy
compound can be melt molded at a temperature of up to 330°C into an article having
improved mechanical and thermal properties. An aromatic polyesteramide consisting
of components I to V and unit VI having an anilino group is also provided. A filled
composition is obtained by blending the polyester or polyesteramide with an inorganic
filler. A magnetic resin composition is obtained by blending the polyester or polyesteramide
with a magnetic powder.